package cn.pku.sirx.snad.ad.dao;

import cn.pku.sirx.snad.ad.model.entity.BusinessKeyword;

/**
 * @author WangXiao
 */
public interface IBusinessKeywordDao extends IDao<BusinessKeyword> {

	/**
	 * Get the weight of a keyword.
	 * 
	 * @param keyword
	 *            keyword
	 * @return weight or null if not exist
	 */
	Integer getWeight(String keyword);

}
